Does anyone have code for calculating lambda (nominal to nomial
association) as well as the associated approximate p-value. I know of the lambda ado file (by Nick Cox); however, is there anything else out there? It is strange that STATA doesn't have this measure in the tab function--this is something that is "canned" in SPSS. Thank you. John Antonakis * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ |
-lambda- on SSC (please explain where user-written stuff you refer to
comes from) was originally written, I think, because someone on the list asked how to calculate the beast. As I recall, a P-value calculation is problematic as well as messy, as the applicability of the theory to small samples is a matter of faith. Hence getting a bootstrap confidence interval and see if it straddles zero is surely the way to go. That requires no extra programs. The mention of SPSS is not decisive here. Measures of association like this proliferate in the literature like mushrooms in the dark and conceal as much as they reveal. StataCorp's prejudice has long been that it is better to think in terms of modelling commands. Nick [hidden email] John Antonakis Does anyone have code for calculating lambda (nominal to nomial association) as well as the associated approximate p-value. I know of the lambda ado file (by Nick Cox); however, is there anything else out there? It is strange that STATA doesn't have this measure in the tab function--this is something that is "canned" in SPSS. * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ |
Hi Nick:
How does one use the bootstrap with your lamda ado file? I am not following what you have suggested. Thanks. John. Nick Cox wrote: > -lambda- on SSC (please explain where user-written stuff you refer to > comes from) was originally written, I think, because someone on the list > asked how to calculate the beast. As I recall, a P-value calculation is > problematic as well as messy, as the applicability of the theory to > small samples is a matter of faith. Hence getting a bootstrap confidence > interval and see if it straddles zero is surely the way to go. That > requires no extra programs. > > The mention of SPSS is not decisive here. Measures of association like > this proliferate in the literature like mushrooms in the dark and > conceal as much as they reveal. StataCorp's prejudice has long been that > it is better to think in terms of modelling commands. > > Nick > [hidden email] > > John Antonakis > > Does anyone have code for calculating lambda (nominal to nomial > association) as well as the associated approximate p-value. I know of > the lambda ado file (by Nick Cox); however, is there anything else out > there? > > It is strange that STATA doesn't have this measure in the tab > function--this is something that is "canned" in SPSS. > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ |
sysuse auto, clear
bootstrap r(lambda), reps(50) : lambda rep f HTH Martin _______________________ ----- Original Message ----- From: "John Antonakis" <[hidden email]> To: <[hidden email]> Sent: Monday, December 08, 2008 9:01 PM Subject: Re: st: RE: lambda--p-value > Hi Nick: > > How does one use the bootstrap with your lamda ado file? I am not > following what you have suggested. > > Thanks. > John. > > Nick Cox wrote: > > -lambda- on SSC (please explain where user-written stuff you refer to > > comes from) was originally written, I think, because someone on the list > > asked how to calculate the beast. As I recall, a P-value calculation is > > problematic as well as messy, as the applicability of the theory to > > small samples is a matter of faith. Hence getting a bootstrap confidence > > interval and see if it straddles zero is surely the way to go. That > > requires no extra programs. > > > > The mention of SPSS is not decisive here. Measures of association like > > this proliferate in the literature like mushrooms in the dark and > > conceal as much as they reveal. StataCorp's prejudice has long been that > > it is better to think in terms of modelling commands. > > > > Nick > > [hidden email] > > > > John Antonakis > > > > Does anyone have code for calculating lambda (nominal to nomial > > association) as well as the associated approximate p-value. I know of > > the lambda ado file (by Nick Cox); however, is there anything else out > > there? > > > > It is strange that STATA doesn't have this measure in the tab > > function--this is something that is "canned" in SPSS. > > > > > > * > > * For searches and help try: > > * http://www.stata.com/help.cgi?search > > * http://www.stata.com/support/statalist/faq > > * http://www.ats.ucla.edu/stat/stata/ > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ |
Martin said it; except that if you care, you might as well use a few
thousand -reps()-. Nick [hidden email] Martin Weiss sysuse auto, clear bootstrap r(lambda), reps(50) : lambda rep f John Antonakis > How does one use the bootstrap with your lamda ado file? I am not > following what you have suggested. Nick Cox wrote: > > -lambda- on SSC (please explain where user-written stuff you refer to > > comes from) was originally written, I think, because someone on the list > > asked how to calculate the beast. As I recall, a P-value calculation is > > problematic as well as messy, as the applicability of the theory to > > small samples is a matter of faith. Hence getting a bootstrap confidence > > interval and see if it straddles zero is surely the way to go. That > > requires no extra programs. > > > > The mention of SPSS is not decisive here. Measures of association like > > this proliferate in the literature like mushrooms in the dark and > > conceal as much as they reveal. StataCorp's prejudice has long been that > > it is better to think in terms of modelling commands. John Antonakis > > Does anyone have code for calculating lambda (nominal to nomial > > association) as well as the associated approximate p-value. I know of > > the lambda ado file (by Nick Cox); however, is there anything else out > > there? > > > > It is strange that STATA doesn't have this measure in the tab > > function--this is something that is "canned" in SPSS. * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ |
Thanks Marin, Nick.
Best, John Nick Cox wrote: > Martin said it; except that if you care, you might as well use a few > thousand -reps()-. > > Nick > [hidden email] > > Martin Weiss > > sysuse auto, clear > bootstrap r(lambda), reps(50) : lambda rep f > > John Antonakis > >> How does one use the bootstrap with your lamda ado file? I am not >> following what you have suggested. > > Nick Cox wrote: > >>> -lambda- on SSC (please explain where user-written stuff you refer > to >>> comes from) was originally written, I think, because someone on the > list >>> asked how to calculate the beast. As I recall, a P-value calculation > is >>> problematic as well as messy, as the applicability of the theory to >>> small samples is a matter of faith. Hence getting a bootstrap > confidence >>> interval and see if it straddles zero is surely the way to go. That >>> requires no extra programs. >>> >>> The mention of SPSS is not decisive here. Measures of association > like >>> this proliferate in the literature like mushrooms in the dark and >>> conceal as much as they reveal. StataCorp's prejudice has long been > that >>> it is better to think in terms of modelling commands. > > > John Antonakis > >>> Does anyone have code for calculating lambda (nominal to nomial >>> association) as well as the associated approximate p-value. I know > of >>> the lambda ado file (by Nick Cox); however, is there anything else > out >>> there? >>> >>> It is strange that STATA doesn't have this measure in the tab >>> function--this is something that is "canned" in SPSS. > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ |
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